A public health surveillance report looked at hepatitis A outbreaks in the United States that were linked to drinking water. The report used data collected by the Waterborne Disease and Outbreak Surveillance System over a long period, from 1971 to 2017. Its main purpose was to document and track these types of outbreaks.
The report does not provide specific results about how many outbreaks happened, how many people were affected, or whether public health efforts to stop them worked. The available input information does not include any findings on safety concerns, changes in outbreak numbers, or the success of interventions over the decades studied.
Because this is a surveillance report and not a detailed research study, readers should be careful not to draw conclusions from it. The report itself does not offer analysis on causes, trends, or what the data might mean for current risks. It serves as a record of tracking, but more specific research would be needed to understand the full picture of hepatitis A and drinking water safety in the U.S.